![]() It can be integrated into other IoT devices such as smart walking sticks or wearable gadgets. Viva is a prototype intended to demonstrate the potential use-cases of this idea. Viva operates in a low-power mode with the screen turned off to efficiently utilize the limited battery resources on mobile phones. The UI of the virtual assistant is uniquely designed from the ground-up to be intuitive, without the need for any usual aids via voice commands or single point touch control – where the entire screen acts as a soft button. Feedback is provided to the user whenever there is a potential risk observed. Data collected is then processed by a risk-prediction algorithm to calculate the risk of collision. Object recognition mode includes a pre-built object recognition model that can recognize over 100 different common objects. The navigation assistant analyzes a user’s surroundings by detecting and estimating distances from the user to the object. ![]() This Android application has features such as navigation assistant, object detection, voice-controlled UI and emergency assistant. We present the architecture, as well as a proof-of-concept prototype intended to demonstrate a potential use-case for a commercial embedded product that can be integrated into a walking stick or any wearable gadget. The application provides haptic and voice navigation assistance by detecting obstacles in the user’s surroundings and calculating the potential risk. In this work, we present Viva, an Android-based virtual assistant aiming to help people with visual impairment. It is estimated that there are 1.3 billion people in the world with some form of vision loss. The ukulele is one of the most magical string instruments.Visual impairment refers to the partial or complete loss of one’s ability to see. Learn how to tune up the famous Hawaiian concert, soprano, and tenor ukulele. The sound of the ukulele is immediately noticeable.īut there's nothing worse than listening to a beautiful, engaging song played out of tune. ![]() You don't even need to be a music virtuoso or an experienced ukulele player to notice that there's something wrong. It just sounds terrible.Īlso, if you're about to learn how to play this exotic instrument, tuning is one of the most basic skills you need to master. So, tuning a ukulele is the first thing a person should do before playing a song. Otherwise, instead of a pleasant sound, you get an acoustic nightmare. String instruments are susceptible to subtle air temperature changes, high humidity, dry environments, and even air pressure changes.Īlso, every time you change your strings, you'll need to tune them. Remember that most nylon strings should be replaced every 16 months to keep the integrity of your instrument's sound. "You can speed this bedding‐in process up by stretching the strings," notes Alistair Wood, author of "Ukulele for Dummies." New ukulele strings slip out of tune quickly and, when they are put on, they stretch a little and lose their tuning.īelieve it or not, they need two weeks or more before they bed in, i.e., stop stretching and stay in tune longer. "Tune your ukulele, pull one string away from the soundhole, and gently tug it a few times. Play the string again, and it'll probably be out of tune. ![]() Do this with each string, and your ukulele should stay in tune better." "The string should be less out of tune each time you try it. The Western music chromatic scale has seven main notes - C, D, E, F, G, A, and B, plus five flats and equivalent sharps in between. ![]()
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